How do you open a .dat attachment with Lion?

Can anyone tell me how to open a .dat attachment now the Lion no longer supports the Tnef Enough program?

The problem is that MS Outlook thinks that it is sending attachments to another Windows-based Outlook installation (actually its MS Exchange that's the culprit but we won't go there). So an easy fix is to have your son change your entry in his Outlook address book to indicate that you cannot receive RTF format files.
Also, you can download a very nice app, TNEF's Enough http://www.joshjacob.com/mac-development/tnef.php
It will enable you to drag and drop those pesky .dat files into TNEF where the attachment will open and enable you to save the individual files in their proper format.

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How do you open a hard drive in Lion

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How can i open WINMAIL.DAT attached to e-mails ???

Hi,
anybody knows how to open attached WINMAIL.DAT in e-mails (Yosemite 10.10.3)
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See the suggestion by thomas_r.
Get a copy of TNEF
HOW TO OPEN WINDAT FILES

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Winmail. dat file is attachments sent by Microsoft mail applications (Outlook, Outlook Express or Exchange) on a proprietary format called TNEF. Being a non-standard attachment format, users from other e-mail clients (like Thunderbird or Lotus Notes) or platforms (like Android, Apple, iPad or iPhone) cannot natively read them. But you can open it easily with a winmail viewer. Go to download one and good luck!

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How do I open Winmail.dat?

How do I open Winmail.dat?

ajlayne wrote:
In Outlook, I changed the setting for how the mail sent to each typoe to resolve the issue. I created one email per setting and addressed to both people on their corporate exchange account (same server for both) and their gmail accounts. This is where the confusion arose since one phone receives fine and the other doesn't. I used Gmail as an alternate mail client with the same result.
So basically I used two different clients each time sending to four addresses two are located on each phone. Phone A always receives a winmail.dat file no matter which client or email address is used. Phone B always receives the attachment in it's correct format.
I took it a step further and used the phones to test sending. Even if I use Phone A to send to the other account on Phone A, winmail.dat is received. If done from Phone B to Phone A, Phone A winmail.dat persists. Phone A to Phone B correct format is received. I'm thinking there is a setting somewhere on Phone A I'm not aware of that was somehow changed since it is not mail client dependant nor recipient mail server dependant based on the testing results.
This is a Microsoft Windows setting with Microsoft Outlook or within the Exchange Server gateway in general. These winmail.dat files have been arriving on Linux, BSD, OS X, Tru64 Unix, ULTRIX, Solaris and many other servers for many years, too — unfortunately, everybody that's using non-Microsoft clients and tools encounters these files from time to time. The winmail.dat is a Windows Mail data file, after all.
If the mail client or if the mail server gateway sends a mail message to an iOS device — or many other "foreign" mail clients — that involves a winmail.dat file generated by the sending client or generated by the originating mail server gateway, then iOS will show the winmail.dat file. Like many other mail clients, the iOS mail client does not decode, process nor create these winmail.dat files. (Most clients simply treat these winmail.dat files as an arbitrary attachment on the message.)
Send the same messages to the same email addresses and read those messages via another mail client — one that doesn't have winmail.dat support — and you'll see the exact same behavior; a wad of attached winmail.dat data.
From Microsoft: How to Prevent the Winmail.dat File from Being Sent to Internet Users. In short, either the Outlook client settings or the Exchange Server (IMC) settings will need to be changed here.

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Hi,
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Hi,
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A site definition is a collection of files stored on the server used for all new sites and templates created in SharePoint.
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Jason Guo
TechNet Community Support

How can I open a .wps attachment in Entourage?

How can I open a .wps attachment in Entourage?

That is a dedicated Windows format for Microsft Works ( now obsolete) and there is no direct conversion on the Mac side. There are workabouts:
http://www.ehow.com/how_6132993_open-wps-files-mac.html
The best thing is to encourage those who send such files to use "Save as..." from Works to save the file in another format. I believe Works allows the .rtf format that will open in TextEdit on the Mac. If they have the .doc option, you can open the file with Apple's Pages, Word for Mac, or any of the free productivity suites like LibreOffice.
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How do you open a .dat attachment with Lion?

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